Re: [amsat-bb] HuskySat-1 TLE
I don't see HuskySat-1 in nasabare.txt when I update my sats and/or keps in SatPC32. What am I missing?
Bob W7OTJ
On Fri, Jan 31, 2020 at 5:49 PM Joseph B. Fitzgerald via AMSAT-BB < amsat-bb@amsat.org> wrote:
nasabare.txt updated and tracking available at https://www.amsat.org/track/satloc.php?lang=en&satellite=HuskySat-1
de KM1P
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Perhaps your update process went awry? I just double checked and HuskySat-1 is at the very end of nasabare.txt lines 595-597
Check other entires in nasabare.txt. The epoch field for most spacecraft should be within a day of 20030.00000000
e.g:
AO-07 1 07530U 74089B 20030.47691896 -.00000027 00000-0 11615-3 0 9995 2 07530 101.7807 001.1045 0011931 272.3923 203.7397 12.53641822068576
and if you need it
HuskySat-1 1 45117U 19071G 20032.80952942 .00002863 00000-0 10000-3 0 9995 2 45117 51.6377 303.3690 0010449 296.7674 170.5149 15.32985181 158
de KM1P Joe
_____
HuskySat-1 1 45117U 19071G 20035.00636243 .00002877 00000-0 10000-3 0 9998 2 45117 51.6414 292.7569 0010883 294.4508 65.5308 15.33120280 498
this is a little "fresher"
On 2/5/2020 09:30, Joseph B. Fitzgerald via AMSAT-BB wrote:
Perhaps your update process went awry? I just double checked and HuskySat-1 is at the very end of nasabare.txt lines 595-597
Check other entires in nasabare.txt. The epoch field for most spacecraft should be within a day of 20030.00000000
e.g:
AO-07 1 07530U 74089B 20030.47691896 -.00000027 00000-0 11615-3 0 9995 2 07530 101.7807 001.1045 0011931 272.3923 203.7397 12.53641822068576
and if you need it
HuskySat-1 1 45117U 19071G 20032.80952942 .00002863 00000-0 10000-3 0 9995 2 45117 51.6377 303.3690 0010449 296.7674 170.5149 15.32985181 158
de KM1P Joe
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Thanks all. There was indeed a glitch and it's resolved.
Bob W7OTJ
On Wed, Feb 5, 2020 at 10:11 AM Kevin via AMSAT-BB amsat-bb@amsat.org wrote:
HuskySat-1 1 45117U 19071G 20035.00636243 .00002877 00000-0 10000-3 0 9998 2 45117 51.6414 292.7569 0010883 294.4508 65.5308 15.33120280 498
this is a little "fresher"
On 2/5/2020 09:30, Joseph B. Fitzgerald via AMSAT-BB wrote:
Perhaps your update process went awry? I just double checked and
HuskySat-1 is at the very end of nasabare.txt lines 595-597
Check other entires in nasabare.txt. The epoch field for most
spacecraft should be within a day of 20030.00000000
e.g:
AO-07 1 07530U 74089B 20030.47691896 -.00000027 00000-0 11615-3 0 9995 2 07530 101.7807 001.1045 0011931 272.3923 203.7397 12.53641822068576
and if you need it
HuskySat-1 1 45117U 19071G 20032.80952942 .00002863 00000-0 10000-3 0 9995 2 45117 51.6377 303.3690 0010449 296.7674 170.5149 15.32985181 158
de KM1P Joe
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Kevin bring up an interesting point about the validity of HuskySat-1 elements and their "freshness". Usually element sets are good for a week or more, at least for ham purposes where we have fairly wide beam widths. The exception is the ISS, the only spacecraft we have in nasabare.txt that maneuvers, and we keep its element sets "fresh" by applying updates from Johnson Spaceflight Center several times per day. Husky-Sat 1 will be testing a thruster early in its mission, and endeavors to demonstrate a delta-V of 100m/sec or more. This could cause the accuracy of element sets to degrade more quickly than usual. Do we know if the University of Washington people are doing any orbit estimation/determination?
Also, I updated nasabare.txt with the fresher elements Kevin posted. Given that he has more than 2500 packets received, I'll use what he is using.
de Joe KM1P
Joe et al: Aside from orbit changes, getting the doppler correction right is also pretty fussy. I noticed yesterday that I'm a bit off frequency on the previous official keps (at TCA where things change most quickly) where I was not when they first came out.
I don't know if they are doing their own orbit determination. I never heard such. I have also not heard about when they will be doing which experiment.
73,
Burns WB1FJ
On Wed, Feb 5, 2020 at 8:07 PM Joseph B. Fitzgerald via AMSAT-BB < amsat-bb@amsat.org> wrote:
Kevin bring up an interesting point about the validity of HuskySat-1 elements and their "freshness". Usually element sets are good for a week or more, at least for ham purposes where we have fairly wide beam widths. The exception is the ISS, the only spacecraft we have in nasabare.txt that maneuvers, and we keep its element sets "fresh" by applying updates from Johnson Spaceflight Center several times per day. Husky-Sat 1 will be testing a thruster early in its mission, and endeavors to demonstrate a delta-V of 100m/sec or more. This could cause the accuracy of element sets to degrade more quickly than usual. Do we know if the University of Washington people are doing any orbit estimation/determination?
Also, I updated nasabare.txt with the fresher elements Kevin posted. Given that he has more than 2500 packets received, I'll use what he is using.
de Joe KM1P _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (4)
-
Bob Hammond -
Burns Fisher -
Joseph B. Fitzgerald -
Kevin